what will he say next? >> ifill: but mccaskill has her own problems. romney is well ahead in missouri, and more than half of the voters here disapprove of president obama. she says she remains independent. >> i think the president, if he were in missouri, he would say to missourians what i hope they know about me, and that is i can be a real pain. i am not someone who does what he wants me to do at his beck and call. i have said no to him. it doesn't mean i don't support him; it just means i have a strong objective record of independence. >> ifill: akin is happy to remind voters she voted for both his health care and his stimulus plans. >> she's trying to say that she is mainstream, but when you vote with barack obama 98% of the time, it's hard to say that with a straight face. >> ifill: the outcome of this election could hinge on what happens in liberal cities like st. louis, where mccaskill's supporters are, or on conservative suburbs like here in st. charles, deep in akin's congressional district. as the candidates fight it out for money, time, atte